That was reaction from parents and students after learning that a senior was critically injured after tumbling from a third floor window at Walt Whitman High School in Huntington Station at 9:15 Thursday morning.

School officials say the fall occurred during period change with students coming and going from a classroom.

It happened in the science wing of this building on the campus. Paramedics and teachers rushed to help the student who was air lifted to University Hospital at Stoney Brook in critical condition.

"Certainly, there are indications that the fall was self inflicted. Also indications that there was a note of some sort left. While we don't have that note, police do," superintendant David Bennardo said.

Investigators are trying to determine what happened at the window.

Immediately after the incident the school went into modified lockdown.